{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV8703-0KK","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV8703-0KK","canonicalUrl":"https://aoctrl.com/siemens/5SV8703-0KK","factsUrl":"https://aoctrl.com/api/mcp/products/5SV8703-0KK","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SV8703-0KK summation current transformer, type A, 200 A rated operational current, 70 mm internal diameter, IP20, screw terminals.","salesMarkdown":"The Siemens 5SV8703-0KK is a SENTRON summation current transformer designed for AC systems, rated at 200 A operational current with a 70 mm internal diameter. It's a type A device — meaning it detects both AC and pulsating DC residual currents, which is the standard for modern RCD compatibility in mixed-load panels. The 70 mm window passes bundled conductors up to that diameter, so it fits main feeders or multiple smaller circuits bundled through a single core. Rated operational current of 200 A means this transformer sums the currents of up to 200 A per phase passing through its 70 mm window. The minimum detectable residual current is 30 mA — that's the trip threshold for standard 30 mA RCDs downstream, so it pairs directly with a 30 mA residual current device for personnel protection. Voltage rating tops out at 720 V AC at both 50 Hz and 60 Hz, covering 400 V and 690 V systems common in industrial distribution. Surge voltage resistance of 4 kV gives it basic impulse withstand for installation in standard LV switchgear. Wire length from the transformer to the evaluation unit is limited to 10 m — keep that in mind when routing in a large panel; exceeding it risks nuisance tripping or desensitization. The screw-type terminals accept 0.13 mm² to 2.1 mm² conductors, which covers standard control wiring up to about 14 AWG. Protection class at the terminals is IP20 — finger-safe but not washdown-rated, so mount inside an enclosure. ## Deployment context Mounts inside a distribution panel or switchgear cubicle — the 70 mm ID passes busbars or bundled cables, and the compact footprint (130 mm wide × 110 mm deep × 33 mm tall) fits standard DIN-rail or backplate layouts. The type A design means it's suitable for circuits with electronics, VFDs, or other loads that generate pulsating DC fault currents, not just pure AC sine-wave faults.","metaTitle":"Siemens 5SV8703-0KK SENTRON Summation Current Transformer, 2","metaDescription":"Siemens 5SV8703-0KK SENTRON summation current transformer for AC systems. Rated 200 A, 70 mm internal diameter, type A, IP20. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"110 mm","Width":"130 mm","title":"5SV8703-0KK","Height":"33 mm","Maximum":"70 °C","Minimum":"-20 °C","description":"Summation current transformer 70 mm","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"summation current transformer","Suitability For Use":"for AC systems","Wire Length Maximum":"10 m","Design Of The Product":"type A","according to EN 61346-2":"T","according to IEC 81346-2":"T","Product Function Error Memory":"No","Type Of Electrical Connection":"screw-type terminals","residual current (Idn) minimum":"30 mA","Operational Current Rated Value":"200 A","at AC at 50 Hz rated value maximum":"720 V","at AC at 60 Hz rated value maximum":"720 V","Surge Voltage Resistance Rated Value":"4 kV","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Connectable Conductor Cross-Sections":"0.13 mm² – 2.1 mm²","protection class IP at connection all terminals":"IP20","Internal Diameter Of Summation Current Transformer":"70 mm","Type Of Voltage Of The Operating Voltage For Actuation":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$33.02","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/389e369d5f1cbdecdce767c7c56c2d4a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=402906&mlfb=5SV8703-0KK"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SV8703-0KK?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront for current lead times and per-unit pricing — this part is sourced to order through independent distribution."},{"question":"What is 5SV8703-0KK's internal diameter and what size cables fit?","answer":"The internal diameter is 70 mm, which passes bundled conductors or a main feeder up to that diameter. The screw terminals accept 0.13 mm² to 2.1 mm² for the secondary wiring to the evaluation unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV8703-0KK","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SV8703-0KK when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}